Metal lining.



A. A. ZEITLER.

METAL LINING.

APPLICATION FILED SEPT-2M 1917.

Patented Jan. 22, 1918.

M r o WITNESS: 1N VEN TOR.

Must er C%' a BY A TTORNE YS.

AUGUST A. ZJEIJLLER, 01E OAKLAND, CALIFORNIA.

nearer. marine.

Application filed September at, 1917. Serial No.

To all whom a't may concern:

Be it known that 1, AUGUST A. Znirrnn, a citizen of the United States,residing at Oakland, in the county of Alameda and State of California,have invented new and v useful Improvements in Metal Linings, of whichthe following is-a specification.

This invention relates to a metal lining.

In the construction of tanks and carriers, and particularly evaporators,employed in connection with the manufacture of acids, it is necessary touse lead. Such evapora tors are often subjected to a high vacuum and it,therefore, becomes necessary to make the lead walls very thick, oftenmore than two inches, to Withstand the external atmospheric pressure.This is objectionable as the tanks become very heavy and costly.Attempts have also been made to line steel or other metal tanks withlead, but this has also been more or less unsuccessful as the vacuummaintained tends to pull the lead lining away from the metalto which itis supposed to adhere.

The object of the present invention is to provide a steel, copper, orother metal tank lined with lead; and particularly to provide a key orbond connection between the lead lining and the metal of which the tankis constructed for positively retaining the lead lining against removalor creeping. Further objects will hereinafter appear.

The invention consists of the parts and the construction and combinationof parts as hereinafter more fully described and claimed, havingreference to the accompanying drawings, in which Figure 1 is aperspective view, partly broken away,of a section of lead lined steelplate.

Fig. 2 is a cross section on line 2-2 of Fig.

Referring to the drawings in detail, A indicates a steel, copper orother metal plate, on. the inner surface of which is secured, by meansof rivets 2, a metal lath or wire mesh. such as shown at 3. Thiswire-mesh is provided for the purpose of receiving the leadSpecification of Letters Patent.

Patented Jan, %2, rate. mater.

lining, generally indicated at 4:, and this lining, when applied in afluid condition, naturally flows in between the meshes of the wire andunder the rivet heads, thus causing the wire mesh to form a key andperfect bond between the lead lining and the carrying plate A; the innersurface of the plate being preferably tinned before the lead is appliedto assist the union of the two metals.

The wire mesh secured and positioned as here shown is of greatimportance as it not only forms a retainer for the lining which preventsthe lining from pulling away from the late A, when subjected to a highvacuum, ut it also prevents the lead lining from sagging or creeping byits own weight or by temperature varlations.

A tank or evaporator constructed of metal lined. in the manner heredescribed can be made very cheaply and is not only lighter in weightthan similar evaporators heretofore constructed but will also withstanda greater external or internal pressure without subjecting the lining toany damage. The metal may, of course, also be used for tanks andcarriers employed for storage or the shipping of various forms of acidsand as such has a wide variet of uses. The exact metals employed and thematerials and finish of the several parts may otherwise be such as theexperience and judgment of the manufacturer may dictate. I

wish it understood that various changes in form, proportions and minordetails of construction may be resorted to within the scope of theappended claims and that I do not wish to limit myself to the specificdesiglg and construction here shown.

aving thus described my invention, what I claim and desire to secure byLetters Patent is 1. The combination with a metal plate, of

and a lead lining for the plate forming a union with the tin coating andbeing secured.

against creeping or sagging by the metal lath.

@ Latinas 2. A metal housing for evaporators commesh, and a lead liningfor the metal shell 10 prising an exterior metal shell, a Wire meshsecured by the wire mesh. secured on the inner face of said shell, and aIn testimony whereof I have hereunto set lead lining secured to theshell by the wire my hand in the presence of two subscribing 5 mesh.wltnesses.

3. A metal housing for evaporating tanks AUGUST A. ZEITLER. and the likecomprising a metal shell, the Witnesses: inner face of Which is tinned,a Wire mesh GEO. J. WHITE, on the tinned face, rivets securing said wireGEO. F. GOERL.

